vpRzyzVector.cpp

/****************************************************************************
 *
 * This file is part of the ViSP software.
 * Copyright (C) 2005 - 2017 by Inria. All rights reserved.
 *
 * This software is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * See the file LICENSE.txt at the root directory of this source
 * distribution for additional information about the GNU GPL.
 *
 * For using ViSP with software that can not be combined with the GNU
 * GPL, please contact Inria about acquiring a ViSP Professional
 * Edition License.
 *
 * See http://visp.inria.fr for more information.
 *
 * This software was developed at:
 * Inria Rennes - Bretagne Atlantique
 * Campus Universitaire de Beaulieu
 * 35042 Rennes Cedex
 * France
 *
 * If you have questions regarding the use of this file, please contact
 * Inria at visp@inria.fr
 *
 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 * Description:
 * Euler angles parameterization for the rotation.
 * Rzyz(phi,theta,psi) = Rot(z,phi)Rot(y,theta)Rot(z,psi)
 *
 * Authors:
 * Eric Marchand
 * Fabien Spindler
 *
 *****************************************************************************/

#include <math.h>
#include <visp3/core/vpRzyzVector.h>

vpRzyzVector::vpRzyzVector() : vpRotationVector(3) {}
vpRzyzVector::vpRzyzVector(const vpRzyzVector &rzyz) : vpRotationVector(rzyz) {}

vpRzyzVector::vpRzyzVector(const double phi, const double theta, const double psi) : vpRotationVector(3)
{
  buildFrom(phi, theta, psi);
}

vpRzyzVector::vpRzyzVector(const vpRotationMatrix &R) : vpRotationVector(3) { buildFrom(R); }

vpRzyzVector::vpRzyzVector(const vpThetaUVector &tu) : vpRotationVector(3) { buildFrom(tu); }

vpRzyzVector::vpRzyzVector(const vpColVector &rzyz) : vpRotationVector(3)
{
  if (rzyz.size() != 3) {
    throw(vpException(vpException::dimensionError, "Cannot construct a R-zyz vector from a %d-dimension col vector",
                      rzyz.size()));
  }
  for (unsigned int i = 0; i < 3; i++)
    data[i] = rzyz[i];
}

vpRzyzVector vpRzyzVector::buildFrom(const vpRotationMatrix &R)
{
  double phi;
  if ((fabs(R[1][2]) < 1e-6) && (fabs(R[0][2]) < 1e-6))
    phi = 0;
  else
    phi = atan2(R[1][2], R[0][2]);
  double cphi = cos(phi);
  double sphi = sin(phi);

  double theta = atan2(cphi * R[0][2] + sphi * R[1][2], R[2][2]);

  double psi = atan2(-sphi * R[0][0] + cphi * R[1][0], -sphi * R[0][1] + cphi * R[1][1]);

  buildFrom(phi, theta, psi);

  return *this;
}

vpRzyzVector vpRzyzVector::buildFrom(const vpThetaUVector &tu)
{
  vpRotationMatrix R;
  R.buildFrom(tu);
  buildFrom(R);

  return *this;
}

vpRzyzVector &vpRzyzVector::operator=(double v)
{
  for (unsigned int i = 0; i < dsize; i++)
    data[i] = v;

  return *this;
}

void vpRzyzVector::buildFrom(const double phi, const double theta, const double psi)
{
  data[0] = phi;
  data[1] = theta;
  data[2] = psi;
}

vpRzyzVector &vpRzyzVector::operator=(const vpColVector &rzyz)
{
  if (rzyz.size() != 3) {
    throw(vpException(vpException::dimensionError, "Cannot set a R-zyz vector from a %d-dimension col vector",
                      rzyz.size()));
  }
  for (unsigned int i = 0; i < 3; i++)
    data[i] = rzyz[i];

  return *this;
}